Update m4

[yazpp-moved-to-github.git] / m4

diff --git a/m4 b/m4
index 67d13d0..a68af87 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit 67d13d0e0d554e1a5092de442dbd74a8f283af96
+Subproject commit a68af871a42a363953e3ff78feff378787ad6ddd